Diamonds

Diamonds are almost unbreakable. They can only be broken by other diamonds. Diamonds have a marquise shape. Diamonds are transparent. They cost a lot of money. Diamonds have different colours.

Diamonds' weight is measured in carats. Diamonds were used to engrave gemstones in India by 300 BCE. They can be found underground. Some of them are used for jewellery and the most expensive diamond sold was the Blue Moon that was a whopping 39.78 million Euros.